[Acoustic density of cataracts].

Area of Science:

• Ophthalmology
• Biomedical Ultrasound
• Medical Imaging

Background:

• Cataracts significantly impact vision, necessitating accurate preoperative assessment.
• Understanding the acoustic properties of cataractous lenses is crucial for surgical planning and research.

Purpose of the Study:

• To evaluate the utility of combined ultrasound examination for determining the acoustic properties of cataract lenses.
• To establish an algorithm for assessing lens acoustic density in various cataract severities.

Main Methods:

• Ultrasound scans in multiple imaging modes were performed on 106 patients with cataracts.
• Acoustic density of lens capsules, cortical layers, and nucleus was measured in 2D and 3D.
• Total 3D acoustic density of the lens was also quantified.

Main Results:

• Acoustic density of anterior and posterior capsules remained similar between cataractous and transparent lenses.
• Opacified cortical and nuclear layers exhibited significantly higher 2D acoustic density compared to normal.
• Total 3D acoustic density and 3D nuclear acoustic density increased in cataractous lenses.

Conclusions:

• The developed ultrasound algorithm is suitable for routine preoperative assessment of complex cataracts.
• This method can be utilized for normalizing patient groups in clinical research on cataractogenesis.
• The algorithm aids in evaluating the effectiveness of different surgical techniques for cataracts.